Rotary gasolene-engine.



0. W. LINDSAY.

ROTARY GASOLENB ENG H 'APPLIGATION FILED AUG. 23

Patented Sept 15, 1908.

2 sanmsqasm 1.

0. w; LINDSAY.

SOLENB B HGIN'E.

ROTARY GA I APPLICATION FILED AUG. 23, l90 5.

Patented Se1)t. '15, 1908.

2 SHEETs-SHEET 2.

' t e casing at-the outer ends of the cylinders and useful Improvements in Rotary Gasohaving at their outer ends lieads 19 which are STATES PATENT OFFICE;

CHARLES WESLEY LINDSAY, OF ANTHON, IOWA.

ROTARY GASOLENE-ENGINE. V

To all whom it may concern:

Be it known that 1, CHARLES WESLEY Lnvnsav, a citizen of the United States, residing at Anthon, in the county of Woodbury and State of Iowa, have invented new lone-Engines, of which the following is especification.

This invention relates to rotary explosive gas engines of the duplex type and has for its objects to produce a comparatively simple, ineqtpensive device of this character in which the gas-will be drawn alternately into the cylinders through the hollow crank shaft, one in which the exhaust ports will be positively opened atappropriate intervals and one wherein the cam shaft for actuating said valves will be operated from the crank shaft.

With these and other objects in view, the invention comprises the novel features of construction andcombination of parts more fully hereinafter described.

n the accompanying drawings: Figure 1 is a plan view of an engine embodying the invention. Fig. 2 is a horizontal section taken centrally and longitudinally therethrough.

Referring to the drawings, 1 designates the casing composed of a pair of sections 2 provided at their meeting ends with outstant ing flanges 3 through which are entered 'connecting bolts 4, said sections which are open at their inner ends as at 5 being of tubular form to pro vide cylinders 6,,the outer faces of which are equipped with spaced (-llC-Ull'lftfential ribs 7 desi 'ned as usual to radiate the heat for cooling the cylinders.

Extending into the casing 1 and having bearing therein is 'a crank shaft 8 on which the casing and its contained cylinders are adapted to rotate, said shaft, which is provided at its inner end with a crank arm or head 9 carrying an eccentrically dis )oscd Wrist pin 1t), being preferablv of tu ular form to provide a central gas-in et passage 11 communicating through transverse o enings 12 with inlet pipes or ducts 13 lea ing ref s ectively to valve chambers 14 provided on 6 and in turn communicating with the latter through openings or ports 15. x v

Arranged for reciprocation in the cylinders .6 are pistons 16 provided with connecting through the medium of coupling pins 18 ena tered transversely throu h the latter and Specification of Letters Patent. Application filed August 23,

Patented Sept. 15, 1908'. 1905. Serial Nazism.

perforated to receive the wrist pin 10 on which latter is loosely arranged a sleeve or bushing 20 retained in place by means of a stud bolt 21 tapped ,into the end of -t-ln'epin, it being noted in this connection that one of the heads 19 is of bifurcated form to present a pair of spaced side portions or arms 22 between which the other head .19 is received and that the sleeve 20 has formed at its inner end a projection or feather 23 engaged with a corresponding recess in one of the arms 22 for fixing the bushing to the adjacent head 19' also arranged in each of the casings, which are provided with exhaust ports 28, a movable exhaust valve 29 having its stem 30 ex tended through the OP'POsltG end of the easing and having bearing beyond the latter in a bearing nit-tuber or car 31 formed on the engine casing and suitably perforated toreccive the valve stem.

Fixed on the crank shaft 8 is a pinion 32 in mesh with gears 33 in turn fixed on the outer ends'of cam shafts 3-1- journaled in suitable hearings on the casing and each equipped with a cain portion or head 35 and designed to contact. with the outer ends of the valve stems for opening the exhaust valves 29, it being understood of course that the move ments of l-llL- shafts 34 are so timedrelatively as to alternately open the valves and at appropriate intervals, and further that that portion of the shaft 8 which enters the casing is surrounded by a pair of sleeves or bushings 36 suitably spaced to present an annular chamber 37 in which the branch passages 12 discharge and which in turn communlcates with the. adjacent ends of the tubes or ducts 13.

The outer ends of the shafts 34 are mounted in bearings 34 on the crank hearin -c of the engine, and the inner ends of the sdiafts are. mounted in bearings 34 arranged on the inner ends of the cylinder. On the secondary shafts 34 are fixed collars 34 which cooperate with the hearings 34*;0 as to pre-' vent longitudinal movement of the secondrods 17 pivotallv engaged with the pistons i ary shafts for the purpose of maintaining the gear wheels 33 111 mesh with the pnnon 32. In practice, supposing the parts to be in the postion illustrated in Fig. 2, and a charge,

to be (3cm ressed in the right-hand cylinder 6, an exp osion of said charge will operate the idjacent piston for driving the engine and will at the same time move the opposite piston to exhaust the gases or the- )reviously exploded charge in the other c-y inder out throigh the appropriate exhaustport 28, it beingmnderstood of course that during such exhaust the left-hand valve 29 is maintained.

in open position through the action of the corresponding cam 35. After the gas is exhausted from either of the cylinders the further movement of the corresponding piston opens the adjacent inlet valve 2i and draws a charge of gas through the shaft 8 and duct 13, this chargeunder-continued movement of the piston-being compressed as usual for explosion at the proper time. As the charges while the other head 19'will rot-ate upon thebushing. It is obvious that under this arrangement se. arate wearing faces are presented for eac 1 of the connecting rod heads and that wear onthe connecting rods 17 is measurably decreased. It is also to be observed that owing'to the casing being cast in two similar sections ada ted for connection by the bolts 4 the cost of t 1e device as a whole is matcriall decreased, inasmuch as thesamc mold may e em iloycd for forming the casing sections and t rat as the sections are in all respects identical their proper assemblage is facilitated. Furthermore, as the cylinders revolve the air circulating through the ribs 7 will insure rapid radiation of the heat and effectual cooling of the cylinders, while thelatter will perform the functions and obviate the employment of a fly wheel.

From the foregoing it is a parent that I reduce a simple device arhnirably adapted or the attainment of t-hc'ends in view, it being understood that minor changes in the dctalls herein set forth may be resorted to without departing from the spirit or the invention.

H avin thus fully described my invention,-

what I claim as new and desire to secure by Letters Patent is:

1. In an engine, the combination of a pair of sections each comprising a cylinder and half a crank chamber, bolts for connecting the sections together, bearings formed on the of the bore, sleeves in one of the shaft sections and lyin in the plane of division' thereof, a crank s aft mounted in the bearings and having a bore extending short of the inner end thereof and provided with a plurality of transverse passages leadin out hearings and arranged in spaced relation to form a chamber into which the said passages discharge, pistons in the cylinders, connections between the pistons and crank shaft, a valve chamber on each cylinder, an inlet valve in each chamber, an exhaust valve in each chamber, stems on the exhaust valves extending parallel with the cylinders and dis posed on opposite sides of, the crank shaft, earings on the cylinders for the valve stems, secondary shafts disposed parallel with the crank shaft, hearings on the cylinders for the inner ends of the secondary shafts, oppo' sitely disposed hearings on one of the crank shaft bearings for the secondary shafts, a

pinion on the crankshaft,-and gear wheels on the secondary shafts meshing with the pinion. y

' 2. In an engine, the combination of acrank shaft, cylinders rotatably mounted thereon bearin s connected with the cylinders am divisible in the plane of the crank shaft, webs on the bearings, bolts passing through'th'e webs, a supply conduit carried by the crank shaft, a ciamber in one of the bearingsi valveless ports between the conduit an chamber, valve chambers on the cylinders,

pipes havlng their inner ends threaded in the chamber-containing bearm and communieating through the ports with the said conduit, detachable connections between the outer ends of the pipes and valve chambers, each pipe being removable with its respective cylinder of the engine, an exhaust valve in each chamber, a valve gear for each exhaust valve removable intact with the adjacent cylinder, a pinion on the crank shaft, cachgear comprising a secondary shaft disposed parallel with the crank shaft and extendingacross the adjacent supply pipe, bearings 7 formed one on the cylinder and the other on the crank shaft bearing for the said second-.

ary shaft, a cam on the inner end of the secondary shaft, a stem on the exhaust valve arranged in cooperative relation with the cam, a guide arranged on the cylinder for the stem, and agear wheel on the outer end of the secondary shaft arranged to mesh with the pinion. v i

In testimony whereof, I allix my signature in presence of two witnesses.

CHARLES WESLEY LINDSAY. 'itnesscs: v

D. H. IIAWTIIORNE, L. R. Mvsns. 

